Reamer.



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BEAMER.

`LPPLIGATIOIS FILED NOV. 30,11908.

` Patented July 26,1910.

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THOMAS E. STEVENSON, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO WILLIAM O. CLINGLER, OF CHICAGO, ILLINOIS.

BEAMER.

Specication of Letters Patent.

Application filed November 30, 1908.

Patented July 26, 1910. serial No. 465,384..

To all whom it may concern:

Be it known that I, THOMAS E. STEVEN- soN, a resident of Chicago, in the county o f Cook and State of Illinois, have invented certain new i and useful Improvements in Beamers, of which the following is a full, clear, and exact description.

The invention relates to reamers and more particularly to that type which is generally used for reaming bung-holes in barrels.

In practice it is customary after boring a hole in the barrel to ream the hole to enlarge and taper it for the reception of a suitable stopper or bung. In many instances it is extremely desirable to prevent the shavings, and more particularly the finer particles or dust from passing into the barrels since the holes are usually formed in the barrel after the barrel-heads have been inserted. It is customary to use considerable labor and care in attempting to remove the shavings from the barrel through the hole after the latter has been formed to prevent deterioration of the contents of the barrel by such shavings or dust; e. g., in filling barrels with lard the shavings or dust wil, in time, cause discoloration and deterioration of the lard and therefore, it is desirable to avoid the presence of any shavings or dust in the barrel.

The invention designs to provide an improved reamer for enlarging or cutting holes in which the dust or shavings cut from the barrel will be directed into the body of the reamer and held there until the latter is withdrawn from the barrel, thus effectually avoiding the dropping of the shavings cut by the reamer, into the barrel. To attain this desideratum the shavings are retained in the body of the reamer until the tool is withdrawnl and then discharged so that the shavings will not accumulate in the body of the reamer and render the knife in.- operative.

The invention consists in the several novel features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

In the drawings: Figure 1 is a side elevation of a machine embodying the invention. Fig. 2 is a section of the improved reamer, the closure or gate for the reamer body being shown in open position to discharge the shavings from the body. Fig. 3 is a perspective of the reamer. Fig. l is a section taken on line 4.-4. of Fig. 2, the closure belng shown in closed position. Fig. 5 is a section on line 5 5 of Fig. 2. Fig. 6 is a vertical section of a reamer embodying a modified form of the invention.

The improved reamer comprises a hollow body 10 which is tapered from its upper to its lower end so as to lit into a hole of gradually increasing diameter as it is lowered into it. A chamber 11 is formed in the body to receive the shavings or dust cut out of the barrel. A cutter or knife 12 extends longitudinally along the body at one side thereof and is slidably connected to the body so that it may be adjusted to properly cut the material around a hole in the barrel. The knife 412 is connected to the upper end of the body by a bolt 13 and a slot 14k and its lower end is guided in a clove-tailed groove 15 formed in the body, the knife being formed with a correspondingly formed dovetailed tongue 16 fitting in said groove.` The knife is provided with a cutting-edge 19 projecting' slightly beyond the periphery of the tapered body and a small space is left between the edge of said knife and the adjacent edge 2O of the body so that the shavings or dust eut by the knife will be directed into the chamber 11 by the slit between the knife-edge and the edge 20 of the body. An auger 17 has a screw-threaded stem 18 which is secured in the lower end of the body to initially cut a hole in the barrel before the rezmer is employed to enlarge or taper the ho e.

The body 1() has an open side 21, which is adapted to be closedrwhen the reamer is performing a cutting-operation, by a closure or gate 22. lfhis closure is pivoted at its lower end, as at 28, to permit its upper end to swing outwardly away from the body. The lower end of this closure is adapted to engage the body as at 24 to restrict the outward and downward movement of the closure. The outer side of this closure is shaped to correspond to the tapered periphery of the body and itsside-edges are provided with ribs 25 respectively, for making a snug fit between the body and the closure to prevent the escape of fine dust or shav ings. Inwardly-extending flanges 26 are formed at the side-edges of the closure to confine the shavings within the hollow body until the pivoted closure has been swung outwardly some distance and so that when V the closure is slightly open while the lower end of the reamer is being withdrawn from the enlarged hole in a barrel, the shavings cannot-escape from the body.

In operation, the reamer with the auger at its lower end, is rotated untilthe auger has cut a hole through the barrel'. In practice the auger causes the shavings to be directed upwardly and out of the hole with the possible exception of the last chip or two cut away from the inner edge of the opening. These chips are usually of larger size and can be readily removed from the barrel. After the initial hole has been cut the lower end of the tapered reamer is lowered into the hole and rotated. The knife 12 will then cut away the edge of the hole and gradually enlarge it as it yis forced lower into the opening to bring the larger portion of the tapered body into the opening. During this enlarging or reaming operation, the dust and shavings removed from the edge of the opening will all be directed by the knife into the chamber 11 in the body 10, and the pivoted closure will be held tightly closed by the edge of the barrel-opening, since the outer side of the closure conforms to the tapered periphery of the body, and resultantly all of the dust and shavings cut out of the barrel by the knife 12 will pass into and be temporarily retained in chamber 11. When the hole has been cut to the desired size, the reamer will be withdrawn from the barrel and the closure will be free to be opened to discharge the accumulated shavings and dust in the chamber 11.

The'reamer is provided with a screwthreaded stem 27 at its upper end whereby it may be secured to a shaft 28. This shaft is mounted in suitable bearing-brackets 29 and is continuously rotated by a pulley 30 which is journaled in the upper bracket 29, the pulley being provided with a hub 31, journaled in and held against longitudinal movement in said bracket, and shaft 28 extends through said hub. Pulley 3() is operatively connected to the shaft by a suitable key extending into an elongated key-way 32, so that the shaft 28 may be operated longitudinally to feed the reamer to its work during rotation thereof. The upper end of the shaft 28 is adapted to be shifted vertically by a lever 33 which is pivoted as at 84 to a suitable support and provided at its front end with depending handle 35. Said lever is connected to the upper end of the shaft by a link 36 which is pivotally connected to a collar 87 in suitable manner to shift the shaft longitudinally while it is being rotated. A counter-weight 38 connected to the lever by a cable 39 may be employed to facilitate the vertical shift of the shaft and tool at its lower end and to hold them elevated.

In operation of the improved machine, the shaft 28 will be normally raised, so that a barrel to be bored may be rolled into correct position under it. The operator will then pull handle 35 downwardly to feed shaft 38 and reamer to the barrel. Initially, the auger 17 will cut a comparatively small hole in the barrel and substantially all of the shavings will be drawn out of the hole bythe screw-like auger. After the hole has been initially cut through the barrel, the shaft will be lowered farther to bring the lower part of the reamer into the hole thus cut. If the closure 22 is open during the initial boring operation, it will be closed when the lower part of the reamer passes into engagement with the edge of the hole, formed by the auger. The knife 12 will then gradually cut away the edge of the opening and the reamer will be gradually lowered as the hole is enlarged. During this operation the hole will be tapered and enlarged to the desired size and all of the shavings or dust cut from the edge of the hole will be directed into the chamber 11 in the body of the reamer and retained there while the closure 22 is held closed by the edge of the hole in the barrel. When the reaming operation has been completed, the

operator will raise the shaft 28 quickly to i withdraw the reamer and auger from the barrel, and the closure 22 will be automatically opened by centrifugal force, whereupon the dust and shavings in the chamber 11 of the body will be thrown outwardly at such a distance from the hole that they will not fall into the barrel. Iiesultantly, the shavings will be automatically discharged after each operation so that there can be no accumulation of shavings in the body of the reamer, which will render the knife inoperative during the succeeding operations.

While the reamer has been shown and de scribed as operated by power, it will be understood that it may also be turned by hand when desired, by connecting a suitable handle directly tc the reamer body.

In Fig. 6 is illustrated a modified form of the invention, in which the closure for the chamber 11 in the body is held closed by a spring-pressed latch 37', which is adapted to engage a hook 38 at the upper end of the closure. The latch 37 extends upwardly through the top of the body and when the shaft is raised until the upper end of the latch encounters the lower bracket 29 it will be lowered to release the closure 22. By this means the shavings will be held in the body of the reamer until the reamer has been entirely withdrawn from the barrel.

The invention is not to be understood as restricted to the details set forth, since these may be modified within the scope of the appended claims without departing from the spirit and scope of the invention.

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Having thus described the invention, what l claim as new and desire to secure by Letters Patent, is

l. A reamer comprising a hollow body having an opening in its side to permit the shavings to be discharged therefrom, a knife extending longitudinally on the body and disposed to discharge the shavings into said body, a closure pivoted at its lower end to said body and for closing said opening.

2. A reamer comprising a tapered hollow body having an opening in its side to permit the shavings to be discharged therefrom and a closed bottom, a knife extending longitudinally on the body and disposed to discharge the shavings into said body, and a closure for said opening pivoted at one of its ends to the reduced end of the tapered body.

3. A reamer comprising a hollow body having an opening in its side to permit the shavings to be discharged therefrom and a closed bottom, a knife extending longitudinally on the body and disposed to discharge the shavings into said body, and a closure for said opening adapted to be moved to its closed position by the insertion of the reamer into the material being cut.

4. A reamer comprising a hollow body having an opening in its side to permit the shavings to be discharged therefrom and a closed bottom, a knife extending longitudinally on the body and disposed to discharge the shavings into said body, and a closure for said opening pivoted to said body and adapted to be moved to its closed position by the insertion of the reamer into the material being cut.

5. A reamercomprising a tapered hollow body having an opening in its side to permit the shavings to be discharged therefrom and a closed bottom, a knife extending longitudinally on the body and disposed to discharge the shavings into said body, and al closure for said opening pivoted at its lower end to said body and adapted to be moved to its closed position by the insertion of the reamer into the material being cut.

6. A reamer comprising a hollow body portion having an opening in its side to permit the shavings to be discharged therefrom and a closed end, a knife extending longitudinally of the body and disposed to discharge the shavings into said body, and a closure for said opening adapted to open au tomatically when the reamer is withdrawn from the material being cut and to be closed by its insertion into the material being cut.

7. A rotary reamer comprising a hollow body having an opening in its side to permit shavings to be discharged therefrom and a closed bottom, a knife extending longitudinally on the body and disposed to discharge the shavings into said body, and an automatically opening and closing closure for said opening whereby the shavings will be discharged from the body when it is withdrawn from the material being cut.

8. A rotary reamer, comprising a tapered hollow body having an opening in its side to permit the shavings to be discharged therefrom and a closed bot-toni, a knife extending longitudinally on the body and disposed to direct the shavings into said body, and a closure for said opening pivoted at one of its ends to the'reduced end of the said body and closing and opening automatically when the body is advanced into and withdrawn from the material being cut.

THOMAS E. STEVENSON.

Witnesses:

LoUIs M. Knnsn, WTILLIAM 0. CLINGLER. 

